Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6475348 | Mixture of substances containing compounds with vinyl groups and stabilizers | Heinz Friedrich Sutoris, Konrad Mitulla, Jacques Dupuis | 2002-11-05 |
| 5733658 | Luster pigments based on reduced titania-coated silicate-based platelets | Raimund Schmid, Norbert Mronga, Werner Ostertag, Helmut Schmidt, Juan Antonio Gonzalez Gomez +2 more | 1998-03-31 |
| 5693135 | Interference pigments containing reduced titanium oxide layers for preparing forgeryproof documents and packaging | Raimund Schmid, Norbert Mronga, Werner Ostertag, Helmut Schmidt | 1997-12-02 |
| 5624487 | Preparation of bluish luster pigments | Helmut Schmidt, Werner Ostertag, Hermann Bidlingmaier, Norbert Mronga, Juan Antonio Gonzalez Gomez +2 more | 1997-04-29 |